Hoisting and dumping apparatus



18. 1925. I R. JURGENSON HOIS'IING AND DUMPING APPARATUS 3 Sheets-$heet1 M Filed April 10,

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R. JURGENSON HOISTING AND DUMPING APPARATUS Filed April 10. 1925 sSheets-Sheet 2' Aug. 18. 1925. 1,550,262

R. JURGENSON HOISTING AND DUMPING APPARATUS Filed April 10, 1923 3Sheets-Sheet 3 27 if 34 Rudolph. JLU967ZOOZZ.

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Patented Aug. 18, 1925.

UNITED STATES RUDOLPH JURGENSON, 0F BOSTON, MASSACHUSETTS.

HOISTING AND DUMPING APPARATUS.

Application filed April 10, 1923. Serial No. 631,075.

To all whom it may concern:

Be'it known that I, RUDOLPH JURenNsoN, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented new and useful Improvements in Hoisting and DumpingApparatus, of which the following is a specification.

This invention relates to a hoisting and dumping apparatus and isparticularly intended for use in building concrete structures forhoisting and dumping the concrete mixture.

The object of the invention is to provide a cheap and simple apparatuswhich will automatically hoist a container and at the upward end of itstravel will invert the container so that the contents thereof may bedumped, and furthermore, will operate to automatically return thecontainer to its normal upright position at the beginning of its returntravel and lower it to receive a new supply.

To these ends the invention consists in the combination and arrangementof parts set forth in the following specification and particularlypointed out in the claims thereof.

In the drawings illustrating my invention I have depicted two forms ofapparatuses, one form being illustrated in Figs. 1, 2, 3 and 4, theother form being illustrated in Figs. 5, 6 and 7. The two apparatusesare, however, substantially alike except in the specific means wherebythe container is guided during its upward movement and during theinverting motion of the same.

Referring to the drawings:

Figure 1 is a front elevation partly in section of my improved hoistingand dumping apparatus.

Fig. 2 is a plan view of the same.

Fig. 3 is a sectional elevation similar to Fig. 1 illustrating therelative positions of the parts with the container inverted.

Fig. 4 is an enlarged sectional plan taken on the line 44 of Fig. 1.Fig. 4 is a side elevationof the container and its bail.

Fig. 5 is a side elevation similar to Fig. 1, illustrating a modifiedform of my inven tion.

Fig. 6 is a plan view of the same.

Fig. 7 is a sectional plan taken on line 77 of Figurefi. v

Fig. 8 is an enlarged view of the upper lowered position.

, in its inverted position.

Like numerals refer to like parts throughout the several views of thedrawings.

In Figures 1 and3 a portion of a form for a concrete pier isillustrated.

Referring to Figures 1 to 4 inclusive and Figs. 8 and 9, 10 is aframework, embodying a base 11, uprights 12 and 13, top members 14,platform 15 andhorizontal cross members 16, 17, 18, 19 and braces 20. 21is a container which is provided with a bail 22 pivoted at 23 to thecontainer on diametrically opposite sides and preferably adjacentthebottom thereof. A pair of oppositely disposed guide rolls 24 arerotatably mounted upon studs 25 fast to said container and these guiderolls travel in a pair of oppositely disposed guide members 26 and 27which are rigidly and firmly secured to the frame of the apparatus.These guide members each preferably consists of a timber 28 to theopposite sides of which are secured flat strips of steel 29, whereby aguideway 30 is provided between said strips of steel 29 and in theseguideways the guide rolls 24 travel. The guide members, or tracks, 26and 27 terminate at their upper ends in a curved portion 31 andhorizontal laterally extending portion 32, said curved portion 31 andhorizontally extending portion 32 forming the continuation andtermination of the tracks 26 and 27 at the upper end thereof.

The container is raised and lowered by means of a hoisting rope or cable33 which extends from the bail 22 upwardly and 7 passes overgui de rolls34, 35, and thence downwardly to a drum 36 which is operated bymechanism not shown in the drawings but well known to those skilled inthe art, and operated by a gasoline engine37. The hoisting drum 36 andengine 37 are preferably mounted upon a. truck 38 and between the two ispositioned a cement mixing machine 39 provided with a spout 40 whichguides the concrete from the mixer intothe container 21 when thecontainer is in its It will be noted that the pivots 23 of the bail 22are located approximately midway between the opposite sides of thecontainer, while the pivots of the guide rolls are positioned at oneside of a vertical plane containing the pivots 23, SO that any tendencyof the container to tip in a clockwise direction as viewed in Fig. 4during its upward motion and before it arrives at the end of its upwardmotion is counteractec.

In order to assist in returning the container from the inverted positionillustrated in Figs. 3, 8 and 9 to its normal vertical position, an arm41 is provided. This arm is pivoted to the underside of the horizontalportions 32 of the tracks 26 and 27 by means of a shaft 42. A coiledtorsional spring 43 encircles the shaft 42 and is fastened at one endthereof to the arm 41 and at the other end thereof to the track 27. Oneof the pivots 23 of the bail 22 is extended beyond the bail so that itwill engage the arm 41 when the container is approaching the upper endof its travel and will lift the arm 41 from the horizontal positionillustrated in Fig. 1 to the inclined position illustrated in Fig. 3,whereby the spring 43 will be wound up. The arm 41 is also provided witha counterweight 44 which assists the spring 43 in its operation. Eitherthe spring 43 or the counterweight 44, or both the spring 43 andcounterweight 44, may be utilized as may be found convenient ordesirable.

A spring-actuated buffer 45, consisting a horizontal arm, is provided,which 1s hinged at 46 to the cross piece 18. This buffer engages aspring 47 which encircles the lower end of an arm 48 supported by abracket 49 upon the top 14. The object of this buffer is to form a.yieldin stop which will be engaged by the container when it is inverted,as illustrated in Figs. 3, 8 and 9.

A chute 50 is provided to receive the concrete mixture from thecontainer and guide it into a form 51 for the pier which is being built.

The general operation of the apparatus hereinbefore specificallydescribed and illustrated in Figs. 1, 2, 3, 4, 8 and 9 is as follows:The container is filled with aconcrete mass from the concrete mixer 39,which flows outwardly from said concrete mixer and is guided by thespout into said container. The container is hoisted by means of theapparatus hereinbefore described from its lowermost position, as shownin Figure 1, until it arrives adjacent the upper ends of the guidemembers 26 and 27.

hen the rolls 24 arrive at the curved portions 31, they pass along saidcurved portions on to the horizontal portions 32 of the tracks, while atthe same time the bottom portion of the container continues to be raisedby the hoisting rope 33 and this causes the container to assume theinverted position illustrated in Figs. 3, 8 and 9. The concrete is thusdumped from the container into the chute and passes down said chute andinto the form 51. During this inverting operation of the container, thearm 41 is rocked by the extended pivot 23 from the horizontal positionillustrated in Figure 1 to the upwardly inclined position illustrated inFigs. 3 and 8 and at the end of the inverting operation the bottom edgeof the container is brought into contact with the arm 45, thus stoppingthe movement of the same and acting as a buffer to take the shock.

After the container has been emptied, the hoisting rope is slackened andthe container 21 actuated by the arm 41 spring 43 and by the weight 44is reversed to occupy its normal vertical position and passes around thecurved portions 31 and into the vertical portions of the tracks and isthen lowered to rest upon the base 11, as illustrated in Figure 1, inorder to receive a new supply of concrete from the concrete mixer.

A modified form of my invention is illustrated in Figures 5, 6, '7 and10 which will now be described. This modified form embodies a frameworkconsisting of a base 53, top 54, braces 55, horizontal platform 56,horizontal frame member 57 and vertical frame member 58. A chute 59 isprovided to receive the concrete from the container 60. The engine,concrete mixer, hoisting drum and spout are the same as in theembodiment of my invention illustrated in Figs. 1 to 4 inclusive.

The container is hoisted in the same manner as in the form of myinvention hereinbefore described, by means of a hoisting rope 61 whichis connected to the container by a bail 62, pivoted at 63 near thebottom of the container, as hereinbefore described.

Instead of tracks, guide ropes 64 are employed in this embodiment of myinvention and these guide ropes extend through blocks 66 mounted uponstuds 67 on diametrically opposite sides of the container 60. The blocks66 are split at 68 to receive a rib 69 formed on the rope 64 at thatportion there of which is curved at 70 and 71, said curved portionsforming the upper ends of the guide ropes 64. A spring buffer 72 isprovided upon the frame of the machine against which the container abutsat the end of its inverting operation.

lVhen the container is being returned to a vertical position after thedumping operation has been performed, the spring buffer 72 assists inmoving the container along the curved portions 70 of the guide ropes.

The general operation of this modification of my invention is as follows:The container is supplied with concrete when in its lowered position ashereinbefore described and is hoisted by the hoisting rope 61 and drumand engine 37 to the position illustrated in full lines, Figs. 5 and 10,where the container is shown inverted and the concrete mass is dumpedinto the chute 59 down which it slides into a form not shown in thedrawings. The container, when it reaches the upper end of the guideropes 64 is inverted by reason of the blocks 66 passing around thecurved portion 70 of the guide ropes, while at the same time the bottomof the container is drawn upwardly to invert the same by the hoistingrope 61. this inverting movement the container is moved into theposition illustrated in Figs. 5 and 10 and at the last end of itsmovement the container strikes the buffer 72 and compresses the bufiierspring. After the concrete has passed out of the container and down thechute 59 into the form, the hoisting rope 61 is given a slight movementupward to still further compress the buffer spring and is then released,whereupon the The container after having assumed its normal verticalposition is lowered to the position shown in dotted lines, Fig. 5, andis again filled with concrete from the concrete mixer.

I claim:

1. A hoisting and dumping apparatus having, in combination, a container,a bail pivotally attached to said container, mechanism connected to saidbail to hoist and lower said container, a pair of diametrically opposedpivots mounted on said container above the point where said bail ispivotally attached thereto and vertically positioned stationary andcontinuous guiding means adapted to guide said pivots and terminating attheir upper ends in a pair of angular and oppositely disposed stationaryDurmg branches whereby said container may be inverted when it arrives atthe end of its travel upwardly.

2. A hoisting and dumping apparatus having, in combination, a container,a bail pivotally attached to said container, mechanism connected to saidbail to hoist and lower said container, a pair of diametrically opposedpivots mounted on said container above the point where said bail ispivotally attached thereto, vertically positioned stationary tracksadapted to guide said pivots and terminating at theirupper ends in apair of angularly and oppositely disposed stationary branches wherebysaid container may be inverted when it arrives at the end of its travelupwardly and means to return said container to its normal position atthe beginning of its travel downwardly.

8. A hoisting and dumping apparatus having, in combination, a container,a bail pivotally attached to said container, mechanism connected to saidbail to hoist and lower said container, a pair of diametrically opposedpivots mounted on said container above the point where said bail ispivotally attached thereto, vertically positioned stationary tracksadapted to guide said pivots and terminating at their upper ends in apair of horizontal oppositely disposed stationary branches and curvedbranch portions connecting said vertical and horizontal track portionswhereby said container may be inverted when it arrives at the end of itstravel upwardly, a pivotally mounted arm and a projection on saidcontainer adapted to engage said arm and lift it out of its normalposition whereby said container may be returned to its normal positionat the beginning of its travel downwardly.

In testimonywhereof I have hereunto set my hand.

RUDOLPH URGENSON.

